Small grey Coprinus on horse dung with orange-brown veil remnants

Good morning,

I have found this cute Coprinellus on horse dung on lawn under maquis trees which when young they are 2 mm orange-brown bodies and then develops into a 5 - 10 mm gray pileus with puntate veil remnants that are orange-brown. When young the veil is in isolated patches These are composed of globular cells. I should be in the genus Coprinellus (? Domestici)

The spores are 13 x 8 um (mean) dark brown with a tiny pore. I thought that I saw an oblique pole at the germ pore or it is just a bit eccentric. Another interesting feature is the presence of caulocystidia (also seen in macro pics) which have a long neck and a nice rounded head. I have seen these in the pileus too. The pileus was deliquescent and was not able to see Cheilo/Pleuros.

I am gonna suggest Coprinellus curtus (KALCHBR.) VILGALYS, HOPPLE & JACQ. JOHNSON although the spores are just not too large. It really matches to this:

Coprinellus curtus (Kalchbr.) Vilgalys, Hopple & Jacq. Johnson 2001 - 115305 - Biodiversidad Virtual / Hongos y Líquenes

I took that sect. from Melzer key... maybe I have an old version ?

and thank you for confirming Karl

Karl, I was reading the note on Atlas grzybów Polski - Mushrooms and Fungi of Poland stating:

 Romagnesi (1941: 126) described C. curtus Kalchbr. f. macrosporus which has somewhat larger spores (10.7-14.7 x 6.5-8.5 µm). M. Lange & A.H. Smith raised this taxon to the rank of species, naming it C. heptemerus (see under that name).

The spores with average length 13.0 um and the larger spores reaching 14.5 um I was thinking if to choose C. heptemerus, but then when I saw the images of the pileocystidia and caulocystidia lacking the capitate head I firmed my opinion on C. curtus. Yet the difference of these cystidia are not highlighted in the remarks/distinction comments on that site. Anyway this finding is clearly C. curtus - thanks for your confirmation